public class Main {
    public static void main(String[] args) {
      Student a1=new Student();
      a1.Student("张三",22722,98);
     /* a1.setName("张三");
      a1.setNumber(22722);
      a1.setGrade(98);
      */
      a1.show();
      Student a2=new Student();
     a2.setName("李四");
      a2.setNumber(22822);
      a2.setGrade(97);
      a2.show();
    }
}